2017-2018年延庆区英语学科初三一模真题试题及答案-延庆校区

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2022北京延庆初三英语一模试卷及答案

2022北京延庆初三英语一模试卷及答案

延庆区2022年初三统一练习英语第一部分本部分共33题,共40分。

在每题列出的四个选项中,选出最符合题目要求的一项。

一、单项填空(每题0.5分,共6分)从下面各题所给的A、B、C、D四个选项中,选择可以填入空白处的最佳选项。

1. My sister and I like skating. often go skating in winter.A. IB. WeC. TheyD. You2. — Where do you usually do your homework?—school.A. OfB. OnC. AtD. To3. — What’s that noise, Sam?— My little brother with his toy car now.A. playsB. playedC. will playD. is playing4. The teacher is glad to see that Tony is than before.A. carefulB. more carefulC. most carefulD. the most careful5. Get up early, you can’t catch the first bus.A. andB. soC. o rD. but6. —you give me a hand? I can’t move the box by myself.— No problem.A. CouldB. ShouldC. MustD. Need7. —is the boy over there?— He is my brother.A. WhereB. WhenC. WhatD. Who8. — Lily, what do you often do after school?— I exercise with my friends.A. doB. didC. will doD. was doing9. I on the computer when Frank called me last night.A. workB. was workingC. will workD. am working10. He used to be quite shy, but he a lot since he joined the acting club.A. changesB. will changeC. has changedD. was changing11. The Beijing-Zhangjiakou high-speed railway in 2019.A. buildsB. builtC. is builtD. was built12. — Do you know ?— Next Sunday morning.A. when will he visit usB. when did he visit usC. when he will visit usD. when he visited us阅读下面的短文,掌握其大意,然后从短文后各题所给的A、B、C、D 四个选项中,选择最佳选项。

2018延庆一模

2018延庆一模

2018年延庆一模物理试卷及答案13.下列说法中正确的是A .物体温度降低,其内能一定增大B .物体温度不变,其内能一定不变C .物体温度降低,其分子热运动的平均动能增大D .物体温度升高,其分子热运动的平均动能增大14.如图所示,两束单色光A 、B 分别沿半径方向由空气射入半圆形玻璃砖,出射光合成一束复色光P ,下列说法正确的是A .A 光的频率大于B 光的频率B .在玻璃砖中A 光的传播速度小于B 光的传播速度C .两种单色光由玻璃射向空气时,A 光的临界角较大D .玻璃砖对A 光的折射率大于对B 光的折射率 15.如图所示是氢原子的能级图,现有一群处于n=3的氢原子,能自发地辐射出三种不同频率的光,则辐射的光子能量最大为A .13.6eVB .12.09eVC .10.2eVD .3.4eV16.一简谐机械波沿x 轴正方向传播,波长为λ,周期为T 。

在t=T/2时刻该波的波形图如图1所示,a 、b 是波上的两个质点。

图2表示某一质点的振动图象。

下列说法中正确的是A .质点a 的振动图象如图2所示B .质点b 的振动图象如图2所示C .t=T/2时刻质点a 的速度比质点b 的大D .t=T/2时刻质点a 的加速度比质点b 的大17.已知某星球的质量是M ,一颗卫星绕该星球做匀速圆周运动,卫星的轨道半径是r ,万有引力常量是G 。

根据所给的条件可求出的物理量是A .卫星所受的向心力B .卫星的向心加速度C .星球的密度D .卫星的密度123 4 ∞ n-13.6-3.4-1.51 -0.85 0图1图218.如图表示水平方向的匀强磁场和竖直方向的匀强电场叠加区域,一个质量是m ,带电量是q 的质点B 恰好能静止在区域中间,另一个质量为2m ,带电量也为q 的质点A 恰好能以某一速度沿着垂直于磁场、电场方向做匀速直线运动,且正好与静止的质点B 发生正碰,碰后两质点粘在一起运动,碰撞的过程无电量损失,则下列正确的是A .碰后两质点的运动向下偏且动能增加B .碰后两质点的运动向上偏且动能增加C .碰后两质点的运动向上偏且动能减少D .碰后两质点的运动向下偏且动能减少19.在一节火车车厢内有一个光滑的水平桌面,桌上有一个小球.旁边的乘客观察到,如果火车在水平铁轨上做匀速直线运动,小球在桌面上保持静止.如果火车做加速直线运动,小球就会由静止开始向后运动.这说明A .以匀速运动的车厢为参考系,牛顿第一定律成立B .以加速运动的车厢为参考系,牛顿第一定律成立C .无论是以匀速运动的车厢为参考系还是以加速运动的车厢为参考系,牛顿第一定律都成立D .无论是以匀速运动的车厢为参考系还是以加速运动的车厢为参考系,牛顿第一定律都不成立20.移动支付已经成了中国的一个名片,常见的移动支付有微信支付、支付宝等。

2017-2018年海淀区英语学科初三一模真题试题答案-安河桥校区

2017-2018年海淀区英语学科初三一模真题试题答案-安河桥校区

2017-2018年海淀区英语学科初三一模真题试题答案-安河桥校区海淀区九年级第二学期期中练习英语参考答案2018.5一、单项填空(共6分,每小题0.5分)1. B2. D3. C4. D5. B6. A7. C8. B9. D 10. A 11. C 12. A二、完形填空(共8分,每小题1分)13. A 14. D 15. A 16. B 17. D 18. B 19. C 20. C三、阅读选择(共26分,每小题2分)21. A 22. B 23.D 24. C 25. A 26. B27. A 28. D 29. C 30. B 31. D 32.C33. D四、阅读短文,根据短文内容回答问题。

(共10分,每小题2分)34. 355 million.35.By writing about a happy place with simple worries.36.T he importance of a person’s inner worth.37. When Schulz learned his cancer was serious.38.Because he spent his whole life writing and his positive works influenced many people allover the world.五、文段表达(10分)39. Possible version:题目一Dear Tom,I am very happy to know that you won the first prize in the Chinese speech competition, so I’m writing to congratulate you on your wonderful performance.You did a good job in the Chinese speech competition. You pronounced really well during your speech and your voice was beautiful. You spoke so fluently that we all felt proud of you. What’s more, we were surprised at your rich and meaningful contents.As your best friend, I know you tried your best for the competition. You kept practicing your speech every day in order to make it better. I know it is important to keep on trying and never to give up. I hope I can be successful like you one day in the future.Yours,Li Hua 题目二It’s very important to be confident. Self-confidence can bring us courage to stick to what we do. So it’s val uable to u s.When I was in Grade 7, once my teacher asked me to make a speech in class. Although I practiced it for many times at home, I still felt nervous and forgot the words at the beginning of it. Then I breathed deeply and relaxed myself. You can’t b elieve how happy I was when I recalled the speech and finished it successfully. My teacher thought highly of my performance and I got much encouragement from my classmates. From then on, I have become more and more confident.To build confidence, firstly we need to clearly know about our own advantages and try to develop them. It is the mostimportant that we should put in enough effort to what we do. Then we can finally make it and gain more confidence.。

2019年北京市延庆区初三一模英语试卷附答案解析

2019年北京市延庆区初三一模英语试卷附答案解析

2019年北京市延庆区初三一模英语试卷附答案解析一、单项填空延庆区2019 年初三统一练习英语从下列各题所给的A、B、C、D 四个选项中,选择可以填入空白处的最佳选项。

(共6 分,每小题0.5 分)1.My grandparents live in the countryside. We often go to see .A.him B.them C.her D.you2.— What will you buy your mom?— Some flowers.A.in B.at C.for D.on3.—won the curling gold medal at the 12th Winter Olympics?—Chen Jianxin. He’s from Yanqing.A.Who B.What C.Where D.When4.The air in Beijing is getting much now than a few years ago.A.clean B.cleaner C.cleanest D.the cleanest5.— What time do you usually get up?—I usually up at 6:30.A.get B.got C.will get D.was getting 6.Don’t turn on the TV. Grandma .A.sleeps B.slept C.will sleep D.is sleeping7.—Tony, did you go to Alice’s birthday party?—No, she me.A.doesn’t invite B.won’t inviteC.hasn’t invited D.didn’t invite8.Miss Lin a lot of work for the poor area since 2015.A.does B.did C.has done D.will do9.It heavily when we got off the train.A.rains B.rained C.is raining D.was raining10.Get up early, you’ll be late for class.A.so B.or C.and D.but11.Another new road _ near my school next year.A.builds B.will build C.is built D.will be built12.— Jane, could you tell me the beautiful kite?— Oh, I bought it in a shop near the park.A.where you bought B.where will you buyC.where did you buy D.where you will buy二、完形填空阅读下面的短文,掌握其大意,然后从短文后各题所给的A 、B 、C 、D 四个选项中,选择最佳选项。

2018北京初三数学延庆一模-(有答案)

2018北京初三数学延庆一模-(有答案)

延庆区2018年中考二模数学试卷一、选择题:(共8个小题,每小题2分,共16分) 下面各题均有四个选项,其中只有一个..是符合题意的. 1.利用尺规作图,作△ABC 边上的高AD ,正确的是2.右图是某几何体的三视图,该几何体是 A .三棱柱B .三棱锥C .圆柱D .圆锥3.实数a ,b 在数轴上的对应点的位置如图所示,则正确的结论是 A .1a >- B .0a b ⋅>C .0b a -<<-D .a b >4.计算:97...a a ab b b b +++=⋅⋅⋅⋅⋅6474814243个个A .97a bB .97a bC .79abD .97a bABCDABC DABC DABCDA B . C . D .5.关于x 的一元二次方程2(1)10mx m x -++=有两个不等的整数根,那么m 的值是 A .1- B .1 C .0 D .1± 6.已知正六边形ABCDEF ,下列图形中不是..轴对称图形的是7.下面的统计图反映了我国2013年到2017年国内生产总值情况.(以上数据摘自 国家统计局《中华人民共和国2017年国民经济和社会发展统计公报》)根据统计图提供的信息,下列推断不合理...的是A .与2016年相比,2017年我国国内生产总值有所增长;B .2013-2016年,我国国内生产总值的增长率逐年降低;C .2013-2017年,我国国内生产总值的平均增长率约为6.7% ;D .2016-2017年比2014-2015年我国国内生产总值增长的多.FA BCDEF EDCBAF ABCDEFABCDEA .B .C .D .20000040000060000010000000520%亿元2013-2017年国内生产总值及其增长速度8.某游泳池长25米,小林和小明两个人分别在游泳池的A ,B 两边,同时朝着另一边 游泳,他们游泳的时间为(秒),其中0180t ≤≤,到A 边距离为y (米),图中的实 线和虚线分别表示小林和小明在游泳过程中y 与t 的对应关系.下面有四个推断: ①小明游泳的平均速度小于小林游泳的平均速度; ②小明游泳的距离大于小林游泳的距离; ③小明游75米时小林游了90米游泳; ④小明与小林共相遇5次;其中正确的是A .①②B .①③ C.③④ D .②④二、填空题(共8个小题,每小题2分,共16分) 9.若分式23x x +-有意义,则实数x 的取值范围是 . 10.右图是一个正五边形,则∠1的度数是 .11.如果210a a --=,那么代数式221()1a a a a a --⋅-的值是 . 12.如图,在△ABC 中,D ,E 分别是AB ,AC 上的点,DE ∥BC ,若AD =1,BD =3,则DEBC的值为 .13.2017年延庆区农业用水和居民家庭用水的总和为8亿立方米,其中居民家庭用水比农业用水的2倍还多0.5亿立方米.设农业用水为x 亿立方米,居民家庭用水为y 亿1BCDE立方米.依题意,可列方程组为____________. 14.如图,AB 是⊙O 的弦,OC ⊥AB ,∠AOC =42°,那么∠CDB 的度数为____________.15.如图,在平面直角坐标系xOy 中,△DEF 可以看作是△ABC旋转)得到的,写出一种由△ABC 得到△DEF 的过 程: .16.某农科所在相同条件下做玉米种子发芽实验,结果如下:某位顾客购进这种玉米种子10千克,那么大约有____千克种子能发芽. 三、解答题(本题共68分,第17题-22题,每小题5分;第23-26题,每小题6分;第27题,第28题每小题各7分)解答应写出文字说明、证明过程或演算步骤.%17.计算:0113tan 301(2)()3π-︒++--.18.解不等式组:523(2)53.2x x x x -<+⎧⎪⎨+≤⎪⎩, 并写出它的所有整数解.19.如图,在△ABC 中,AD 平分∠BAC 交BC 于点D ,过点D 作DE ∥AB 交AC 于点E . 求证:AE=DE .20.已知:∠AOB 及边OB 上一点C .求作:∠OCD ,使得∠OCD=∠AOB .要求:1.尺规作图,保留作图痕迹,不写做法;(说明:作出一个..即可) 2.请你写出作图的依据.21.如图,Rt △ABC 中,∠ABC =90°,点D ,F分别是AC ,AB 的中点,CE ∥DB ,BE ∥DC . (1)求证:四边形DBEC 是菱形;(2)若AD =3, DF =1,求四边形DBEC 面积.22.在平面直角坐标系xOy 中,直(y kx b k =+≠与x 轴交于点A ,与y 轴交于点B ,与反比例函数(0)my m x=≠的图象在第一象限交于点P (1,3),连接OP .(1)求反比例函数(0)my m x=≠的表达式;EAFEDCBA(2)若△AOB 的面积是△POB 的面积的2倍,求直线y kx b =+的表达式.23.如图,AB 是⊙O 的直径,D 是⊙O 上一点,点E 是AD 的中点,过点A 作⊙O 的切线交BD 的延长线于点F .连接AE 并延长交BF 于点C . (1)求证:AB BC =; (2)如果AB =5,1tan 2FAC ∠=,求FC 的长.24.从北京市环保局证实,为满足2022年冬奥会对环境质量的要求,北京延庆正在对其周边的环境污染进行综合治理,率先在部分村镇进行“煤改电”改造.在治理的过 程中,环保部门随机选取了永宁镇和千家店镇进行空气质量监测. 过程如下,请补充完整. 收集数据:从2016年12月初开始,连续一年对两镇的空气质量进行监测(将30天的空气污染 指数(简称:API )的平均值作为每个月的空气污染指数,12个月的空气污染指数 如下:千家店镇:120 115 100 100 95 85 80 70 50 50 50 45 永宁 镇:110 90 105 80 90 85 90 60 90 45 70 60 整理、描述数据:按如下表整理、描述这两镇空气污染指数的数据:质量为良;100<空气污染指数≤150时,空气质量为轻微污染.) 分析数据:两镇的空气污染指数的平均数、中位数、众数如下表所示;A请将以上两个表格补充完整;得出结论:可以推断出______镇这一年中环境状况比较好,理由为_____________.(至少从两个不同的角度说明推断的合理性)25.如图,点P 是以O 为圆心,AB 为直径的半圆上的动点,AB =6cm ,设弦AP 的长为x cm , △APO 的面积为y cm 2,(当点P 与点A 或 点B 重合时,y 的值为0).小明根据学习函数的经验,对函数y 随自变量x 的变化而变化的规律进行了探究. 下面是小明的探究过程,请补充完整;(1)通过取点、画图、测量、计算,得到了x 与y 的几组值,如下表:那么m = ;(保留一位小数) (2)建立平面直角坐标系,描出以表中各组对应值为坐标的点, 画出该函数图象.(3)结合函数图象说明,当△APO 的面积是4时,则AP 的值约为 .(保留一位小数)26.在平面直角坐标系xOy 中,抛物线y =ax 2-4ax +3a (a >与x 轴交于A ,B 两点(A 在B 的左侧). (1)求抛物线的对称轴及点A ,B 的坐标; (2)点C (t ,3)是抛物线243(0)y ax ax a a =-+>上一点,(点C 在对称轴的右侧),过点C作x 轴的垂线,垂足为点D .①当CD AD =时,求此时抛物线的表达式; ②当CD AD >时,求t 的取值范围.27.如图1,正方形ABCD 中,点E 是BC 延长线上一点,连接DE ,过点B 作BF ⊥DE于点F ,连接FC . (1)求证:∠FBC =∠CDF .(2)作点C 关于直线DE 的对称点G ,连接CG ,FG .①依据题意补全图形;②用等式表示线段DF ,BF ,CG 之间的数量关系并加以证明.28.平面直角坐标系xOy 中,点1(A x ,1)y 与2(B x ,2)y ,如果满足120x x +=,120y y -=,其中12x x ≠,则称点A 与点B 互为反等点. 已知:点C (3,4)(1)下列各点中, 与点C 互为反等点;D (-3,-4),E (3,4),F (-3,4) (2)已知点G (-5,4),连接线段CG ,若在线段CG 上存在两点P ,Q 互为反等点,求点P 的横坐标p x 的取值范围;图1备用图FDEC BA FDEC BA(3)已知⊙O的半径为r,若⊙O与(2)中线段CG的两个交点互为反等点,求r的取值范围.。

延庆县初三一模英语试题及答案.doc

延庆县初三一模英语试题及答案.doc

延庆县2011年毕业暨一模考试试卷初三英语考生须知1.本试卷共12页,满分120分,考试时间120分钟。

2.在试卷和答题卡上准确填写学校名称、姓名和准考证号。

3.试题答案一律填涂或书写在答题卡上,在试卷上作答无效。

4.在答题卡上,选择题用2B铅笔作答,其他试题用黑色字迹签字笔作答。

5.考试结束,请将本试卷和答题卡一并交回。

听力理解(共24分)一、听对话,从下面各题所给的A、B、C三幅图片中选择与对话内容相符的图片。

每段对话读两遍。

(共4分,每小题1分)1.A. B. C.2.A. B. C.3.A. B. C.4.A. B. C.二、听对话或独白,根据对话或独白的内容,从下面各题所给的A、B、C三个选项中选择最佳选项。

每段对话或独白读两遍。

(共12分,每小题1分)请听一段对话,完成第5至第6小题。

5. Where is the man going?A. To the bank.B. To the post office.C. To the cinema.6. How will the man go there?A. On foot.B. By bus.C. By car.请听一段对话,完成第7至第8小题。

7. What does Li Ying do?A. A singer.B. A cook.C. A student.8. What language can Li Ying speak?A. Chinese.B. Japanese.C. English.请听一段对话,完成第9至第10小题。

9.What would the man do if he won the lottery (奖券,彩票)?A. Buy a big house.B. Buy a big garden.C. Go round the world.10. What are the two speakers going to do?A. To go shopping.B. To have lunch.C. To go to movies.请听一段对话,完成第11至第13小题。

2019年北京市延庆区初三一模英语试卷附答案解析

一、单项填空延庆区2019 年初三统一练习英语从下列各题所给的A、B、C、D 四个选项中,选择可以填入空白处的最佳选项。

(共6 分,每小题0.5 分)1.My grandparents live in the countryside. We often go to see .A.him B.them C.her D.you2.— What will you buy your mom?— Some flowers.A.in B.at C.for D.on3.—won the curling gold medal at the 12th Winter Olympics?—Chen Jianxin. He’s from Yanqing.A.Who B.What C.Where D.When4.The air in Beijing is getting much now than a few years ago.A.clean B.cleaner C.cleanest D.the cleanest5.— What time do you usually get up?—I usually up at 6:30.A.get B.got C.will get D.was getting 6.Don’t turn on the TV. Grandma .A.sleeps B.slept C.will sleep D.is sleeping7.— Tony, did you go to Alice’s birthday party?—No, she me.A.doesn’t invite B.won’t inviteC.hasn’t invited D.didn’t invite8.Miss Lin a lot of work for the poor area since 2015.A.does B.did C.has done D.will do9.It heavily when we got off the train.A.rains B.rained C.is raining D.was raining10.Get up early, you’ll be late for class.A.so B.or C.and D.but11.Another new road _ near my school next year.A.builds B.will build C.is built D.will be built12.— Jane, could you tell me the beautiful kite?— Oh, I bought it in a shop near the park.A.where you bought B.where will you buyC.where did you buy D.where you will buy二、完形填空阅读下面的短文,掌握其大意,然后从短文后各题所给的A、B、C、D 四个选项中,选择最佳选项。

2019年春北京市延庆区九年级一模英语试题及答案

2019北京延庆区初三一模英语一、单项填空从下列各题所给的A、B、C、D四个选项中,选择可以填入空白处的最佳选项。

(共6分,每小题0.5分)1.My grandparents live in the countryside. We often go to see ______.A.him B.them C.her D.you2. — What will you buy ______ your mom?— Some flowers.A.in B.at C.for D.on3. — ______ won the curling gold medal at the 12th Winter Olympics?— Chen Jianxin. He’s from Yanqing.A.Who B.What C.Where D.When4.The air in Beijing is getting much______ now than a few years ago.A.clean B.cleaner C.cleanest D.the cleanest5.— What time do you usually get up?— I usually_____ up at 6:30.A.get B.got C.will get D.was getting6.Don’t turn on the TV. Grandma ______.A.sleeps B.slept C.will sleep D.is sleeping7.— Tony, did you go to Alice’s birthday party?— No, she _____ me.A.doesn’t invite B.won’t inviteC.hasn’t invited D.didn’t invite8.Miss Lin _____ a lot of work for the poor area since 2015.A.does B.did C.has done D.will do9.It ______ heavily when we got off the train.A.rains B.rained C.is raining D.was raining10.Get up early, _____ you’ll be late for class.A.so B.or C.and D.but11.Another new road ______ near my school next year.A .buildsB .will buildC .is builtD .will be built12.— Jane, could you tell me ______ the beautiful kite?— Oh, I bought it in a shop near the park.A .where you boughtB .where will you buyC .where did you buyD .where you will buy二、完形填空阅读下面的短文,掌握其大意,然后从短文后各题所给的A 、B 、C 、D 四个选项中,选择最佳选项。

北京市延庆区2017-2018年一模考试数学(理)试卷(含答案)

延庆区2017—2018学年度高三模拟试卷数学(理科) 2018.3本试卷共6页,满分150分,考试时间120分钟第Ⅰ卷(选择题)一、选择题:本大题共8小题,每小题5分,共40分.在每小题给出的四个选项中,只有一项是符合题目要求的.1. 若集合2{|02},{|1}A x x B x x =≤≤=>,则A B =U (A ){|01}x x ≤≤ (B ){|0x x >或1}x <- (C ){|12}x x <≤ (D ){|0x x ≥或1}x <-2. 在复平面内,复数-2i1i +的对应点位于的象限是(A )第一象限 (B )第二象限 (C )第三象限 (D )第四象限3. 已知函数()f x 是定义域为R 的奇函数,且(1)2f =-,那么(1)(0)f f -+= (A )-2 (B )0 (C )1 (D )24. 已知非零向量c b a ρρρ,,则“()0a b c ⋅=-r r r ”是“c b ρρ=”的(A )充分不必要条件 (B )必要不充分条件 (C )充要条件 (D )既不充分也不必要条件5. 若x ,y 满足2030x y x y x ≤≥≥-⎧⎪+⎨⎪⎩则22x y +的最小值为(A )0 (B )3 (C )4.5 (D )56. 该程序框图的算法思路来源于我国古代数学名著《九章算术》中的“更相减损术”,执行该程序框图,若输入的,a b 分别为14,4,则输出的a 为(A )0 (B )2 (C )4 (D )147. 某三棱锥的三视图如图所示,则该三棱锥的最长棱的长为(A 2 (B 3 (C ) 2 (D 58. 若,a b 是函数()()20,0f x x px q p q =-+>>的两个不同的零点,且,,2a b -这三个数适当排序后可成等差数列,且适当排序后也可成等比数列,则a b +的值等于 (A )4 (B )5 (C )6 (D )7正(主)视图侧(左)视图俯 视 图(7题图)1112第Ⅱ卷(非选择题)二、填空题:本大题共6小题,每小题5分,共30分.9. 设双曲线2214x y -=的焦点为12,,F F P 为该双曲线上的一点,若13PF =,则2PF = .10. 已知()2sin 2f x x =ω,其周期为π,则ω= ,当,63x ππ⎡⎤∈⎢⎥⎣⎦时,函数()f x 的最大值为 .11. 无偿献血是践行社会主义核心价值观的具体行动,需要在报名的2名男教师和6名女教师中,选取5人参加无偿献血,要求男、女教师都有,则不同的选取方法的种数为 .(结果用数值表示)12. 以坐标原点为极点,x 轴正半轴为极轴建立极坐标系,设():cos sin 2l +=ρθθ,M 为l 与224x y +=的交点,则M 的极径为 .13. 已知()()和f x g x 在定义域内均为增函数,但()()f x g x ⋅不一定是增函数,例如当()f x = 且()g x = 时,()()f x g x ⋅不是增函数.14. 有4个不同国籍的人,他们的名字分别是A 、B 、C 、D ,他们分别来自英国、美国、德国、法国(名字顺序与国籍顺序不一定一致). 现已知每人只从事一个职业,且:(1)A 和来自美国的人他们俩是医生; (2)B 和来自德国的人他们俩是教师; (3)C 会游泳而来自德国的人不会游泳; (4)A 和来自法国的人他们俩一起去打球.根据以上条件可推测出A 是来自 国的人,D 是来自 国的人.三、解答题:本大题共6小题,共80分.解答应写出文字说明,证明过程或演算步骤.15.(本小题满分13分)△ABC的内角A,B,C的对边分别为a,b,c,已知sin AA=0,a,b=2.(Ⅰ)求角A;(Ⅱ)求边c及△ABC的面积.16.(本小题满分13分)某车险的基本保费为a(单位:元),继续购买车险的投保人称为续保人,续保人本年度的保费与其上年度出险次数的关联如下:上年度出险次数0 1 2 3 4 ≥5保费0.85a a 1.25a 1.5a 1.75a2a 随机调查了该险种的1000名续保人在一年内的出险情况,得到如下统计表:出险次数0 1 2 3 4 ≥5频数400 270 200 80 40 10 (Ⅰ)记A为事件:“一续保人本年度的保费不高于基本保费”,求()P A的估计值;(Ⅱ)某公司有三辆汽车,基本保费均为a,根据随机调查表的出险情况,记X为三辆车中一年内出险的车辆个数,写出X的分布列;(Ⅲ)求续保人本年度的平均保费估计值.如图,在几何体ABCDE 中,四边形ABCD 是矩形,AB ⊥平面BEC ,BE EC ⊥,2AB BE EC ===,点,G F 分别是线段,BE DC 的中点.(Ⅰ)求证://GF 平面ADE ;(Ⅱ)求平面AEF 与平面BEC 所成锐二面角的余弦值;(Ⅲ)在线段CD 上是否存在一点M ,使得DE AM ⊥,若存在,求DM 的长,若不存在,请说明理由.18.(本小题满分13分)已知函数x e x f x-=)((e 为自然对数的底数).(Ⅰ)求曲线()=y f x 在点(0,(0))f 处的切线方程;(Ⅱ)设不等式ax x f >)(的解集为P ,且P x x ⊆≤≤}20|{,求实数a 的取值范围; (Ⅲ)设()()g x f x ax =-,写出函数()g x 的零点的个数.(只需写出结论)已知椭圆E :()222210x y a b a b+=>>过点01(),且离心率2e =.(Ⅰ)求椭圆E 的方程; (Ⅱ)设动直线l 与两定直线1:0l x y -=和2:0l x y +=分别交于,P Q 两点.若直线l 总与椭圆E 有且只有一个公共点,试探究:OPQ ∆的面积是否存在最小值?若存在,求出该最小值;若不存在,说明理由.20.(本小题满分13分)设满足以下两个条件的有穷数列12,,,n a a a L 为(2,3,4,)n n =L 阶“Q 数列”: ①120n a a a +++=L ; ②121n a a a +++=L . (Ⅰ)分别写出一个单调递增的3阶和4阶“Q 数列”;(Ⅱ)若2018阶“Q 数列”是递增的等差数列,求该数列的通项公式; (Ⅲ)记n 阶“Q 数列”的前k 项和为(1,2,3,,)k S k n =L ,试证12k S ≤.(考生务必将答案答在答题卡上,在试卷上作答无效)。

2019-2020学年延庆区初三一模英语试卷

一、单项填空2019-2020学年初三一轮模拟英语从下列各题所给的A、B、C、D 四个选项中,选择可以填入空白处的最佳选项。

(共6 分,每小题0.5 分)1.My grandparents live in the countryside. We often go to see .A.him B.them C.her D.you2. — What will you buy your mom?— Some flowers.A.in B.at C.for D.on3. — won the curling gold medal at the 12th Winter Olympics?— Chen Jianxin. He’s from Yanqing.A.Who B.What C.Where D.When4.The air in Beijing is getting much now than a few years ago.A.clean B.cleaner C.cleanest D.the cleanest5.— What time do you usually get up?— I usually up at 6:30.A.get B.got C.will get D.was getting 6.Don’t turn on the TV. Grandma .A.sleeps B.slept C.will sleep D.is sleeping7.— Tony, did you go to Alice’s birthday party?— No, she me.A.doesn’t invite B.won’t inviteC.hasn’t invited D.didn’t invite8.Miss Lin a lot of work for the poor area since 2015.A.does B.did C.has done D.will do9.It heavily when we got off the train.A.rains B.rained C.is raining D.was raining10.Get up early, you’ll be late for class.A.so B.or C.and D.but11.Another new road _ near my school next year.A.builds B.will build C.is built D.will be built 12.— Jane, could you tell me the beautiful kite?— Oh, I bought it in a shop near the park.A.where you bought B.where will you buyC.where did you buy D.where you will buy二、完形填空阅读下面的短文,掌握其大意,然后从短文后各题所给的A、B、C、D 四个选项中,选择最佳选项。

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2017-2018年延庆区英语学科初三一模真题试题知识运用(共14分)---、单项填空(共6分,每小题0.5分)从下面各题所给的A、B、C、D四个选项中,选择可以填入空白处的最佳选项。

1. --- Jack, thank you for the flowers.--- It’s all right. I hope you like ________.A. theyB. themC. theirD. themselves2. --- What’s the weather like in Australia ________ July?--- It is winter there, so it’s a l ittle cold.A. inB. onC. atD. with3. The North Star is one of ________ stars in the night sky.A. brightB. brighterC. brightestD. the brightest4. I’d love to go to the theatre tonight, ________ I am too busy.A. soB. orC. butD. and5. We ________ a few museums while we were in London.A. visitB. visitedC. have visitedD. are visiting6. --- Shall we play tennis now?--- Sorry, I can’t. I ________ my homework.A. doB. didC. have doneD. am doing7. Mr. King ________ a lot about Chinese culture since he came to Beijing.A. has learntB. will learnC. learnsD. learnt8. --- ________ do you like better, carrots or potatoes?--- Carrots. They are good for my eyes.A. WhyB. WhichC. WhoD. Whose9. --- My grandma ________ looking at that photo on the wall.--- I can understand. It helps her remember her childhood.A. enjoysB. enjoyedC. was enjoyingD. will enjoy10. Mum ________ the window in the kitchen when I got home.A. cleansB. will cleanC. was cleaningD. is cleaning11. Some new airports ________ in the west of our country. It will be very convenient to go there.A. builtB. will buildC. were builtD. will be built12. --- I wonder ________. You are very early every day.--- Only 5 minutes’ walk.A. how far is it from your home to schoolB. how far it is from your home to schoolC. how far was it from your home to schoolD. how far it was from your home to school二、完形填空(共8分,每小题1分)阅读下面的短文,掌握其大意,然后从短文后各题所给的A、B、C、D四个选项中,选择最佳选项。

Lyle’s Second GoIn 1982, when I was coaching the Raiders, the owner of the team talked with me about a possible trade for Lyle Alzado. After watching him on tape, I didn’t think he was that good, but the owner felt we could make Lyle better by creating the right environment for him. We made the __13__.That summer at training camp, Lyle was having a hard time. He had that look in his eyes that many youn g players and some old players get when things aren’t going__14__. One morning Lyle came into my o ffice and he looked like he hadn’t slept. Here was a huge ma n, with his head about as __15__ as it could go. We talked, or rather, I listened. The main point was that Lyle felt his career(职业生涯) was over and it would be best for him and for the team if he retired (退役). He apologized for __16__ us since we had just traded for him.Lyle was always an emotional person. This is one of the reasons he was a good player. He __17__ all that emotional energy with him, ready to fire out at the snap of the ball (开球). Now he was in front of me, almost crying. I thought for a moment, realizing we had to keep that __18__ going. Then I went through my reasons why he should not retire. At the end of our talk, I said, “You go out and play your very best, and let us __19__ if you still have it. Personally, I think you do.”In January 1984. Tampa Bay Stadium. Super Bowl XVIII. With less than two minutes remaining, we were leading 38-9. We were the world champions of professional football. I saw Lyle, crying like a baby. I had to turn away quickly, or I would have joined him in __20__.I remembered that morning in my office, and what Lyle, and what the Raiders, had achieved since he came to us. If Lyle hadn’t given his career another shot, he wouldn’t have had this victory. Maybe the Raiders wouldn’t have had this victory. During that moment, I felt one of the greatest satisfactions of my coaching career.13. A. deal B. plan C. argument D. mistake14. A. away B. over C. well D. fast15. A. low B. cool C. clear D. heavy16. A. pushing B. refusing C. cheating D. disappointing17. A. faced B. carried C. received D. imagined18. A. ball B. fire C. time D. talk19. A. guess B. wonder C. decide D. predict20. A. cheers B. pain C. peace D. tears阅读理解(共36分)三、阅读下列短文,根据短文内容,从短文后各题所给的A、B、C、D四个选项中,选择最佳选项。

(共26分,每小题2分)AI’m crazy about chocolate, s o it’s no surprise that my favorite book is Charlieand the Chocolate Factory by the wonderful Roald Dahl. Forget Charlie Bucket,the real hero is Willy Wonka, inventor of the most amazing sweets in the world.Here are just a few of his delicious creations:●Hot ice cream for a cold day! What a great idea. Now I can eat ice creamevery day! He also invented an ice cream that never melts (融化)---very useful.●Wallpaper that you can lick. This wallpaper comes in orange, grape, appleand banana flavours. When you lick the pictures, you taste the fruit. Brilliant!●Grass made of sugar called Swudge. It grows by the chocolate river and thechocolate waterfall in Willy Wonka’s factory.●Mr. Wonka also invented some special sweets for schoolchildren, suchas a kind of chocolate others cannot see when you are eating it. There are alsosugar-coated pencils and magic hand-fudge (软糖)---you hold the fudge in yourhand and you taste it in your mouth. Finally, there are Wonka’s explodingsweets – a great way of scaring (恐吓) the school bully!Anyway, these are just a few of his inventions. Read the book if you want to know more.21. Who invented the most amazing sweets in the world?A. Willy Wonka.B. Roald Dahl.C. Charlie Bucket.D. The writer.22. Wallpaper is a kind of sweet that ________.A. never meltsB. has tastes of different fruitsC. smells like chocolateD. can not be seen by others23. Which invention is designed especially for schoolchildren?A. Hot ice cream.B. Wallpaper.C. Swudge.D. Sugar-coated pencils.BJOINING A CHOIRI’ve always loved singing, but singing hasn’t always loved me. Iwould open my mouth with a beautiful song in my head, fullyexpecting my voice to follow suit---only to get an awful tone (音调) in return.Still, without a second thought, I continued to try to sing whenever possible. On car journeys, when my now twentysomething sons were small, they would make a great play (hands over their ears, shouting ‘No, Mum, stop!’) of going through punishment as I sang along to the radio.Never in a hundred years would I have thought about joining a choir. And when I did finally become a member of my first choir 15 years ago, something fantastic happened to my life. From the first time I experienced my voice as something special but also comfortable, in harmony (和谐) with the other singers, I lost my heart to singing. It was like falling in love. And everyone in the choir had the same shining smiles and bright eyes---singing made them feel happy, too.Although it is singing itself that makes me happy, it is also how a choir works together. There is something magical about breathing together. The voice of everyone singing quietly together is powerful and excitingly mysterious (神秘的), almost spiritual.And there’s the u nexpected friendship from the activities we do as a choir: raising money for good causes and taking our singing sometimes to places where people are forgotten and sad.I am now a member of six choirs and, if I can, sing every day of the week. I stand in front of several hundred people, and know that some, if not all, of each song will sound not bad at all.24. What did the writer’s sons think of her singing when they were small?A. Terrible.B. Comfortable.C. Fantastic.D. Boring.25. When did the writer join her first choir?A. A week ago.B. Six years ago.C. Fifteen years ago.D. Twenty years ago.26. What brings the writer the unexpected friendship?A. Having car journeys with her sons.B. Helping others by singing in choirs.C. Having shining smiles and bright eyes.D. Singing in front of hundreds of people.CParents and children often face the challenges of money. Common topics include setting the pocket money, learning to save, and deciding on expensive purchases. The goal of most parents is to teach their kids how to manage money wisely. The goal of most kids is getting money to spend. How can families balance these goals?“All parents hope they’ll raise a money -savvy kid, who’ll grow up to be an adult wise in their money use.”says financial (金融的) planner Peg Eddy. The key is letting kids learn by having a little money of their own.The Tidler family in Denver found the best way to teach about money was to let their kids earn some. Their son, Ryan, 17, has been helping with their garden since he was 8. Now he hasbeen able to save $7,800. Ryan has come to see the value in making his own money even when other kids are given money by their parents.Learn Now, Save LaterMoney skills are an important part of becoming a successful adult. David Brady, another financial planner, says, “Young people today will have much more responsibility for their financial future than their parents or grandparents.”Brady does remind kids. “They shouldn’t be thinking about money all the time,”he says However, they should understand basic rules for earning, saving and investing (投资).That knowledge is greatly needed. Over the past years, the averagecredit card debt (债务) of Americans ages 18 to 24 doubled, to nearly $3 ,000.Among high school students, four out of five have never taken a personal-finance class.Talking About ItMany kids want to learn how to manage their money. But parents think only about what kids shouldn’t do. Instead, experts say, knowing how to manage money is the best way for kids to get what they really want. That means long-term planning and saving for big expenses like college or a car. It also means thinking of others, by making donations to charity ( 慈善).Giselle Lopez, 17, of New York City, learned the hard way. She was over $2,000 in debt on her first credit card. Her parents refused to pay, so Giselle got a job. Then she paid the debt off slowly herself. “Now every time I use it, I know that it comes from my own pocket,” Giselle says.“That gives me a sense of responsibility for my actions.”Different kids will have different styles when it comes to money. Teaching them how to use money doesn’t have to mean setting strict rules. When children like Ryan and Giselle have their own money to consider, they can learn to set those rules themselves.27. Brady believes that ________.A. parents should attend more personal-finance classesB. parents should teach their kids how to saveC. kids should learn how to manage moneyD. kids should follow the school rules28. Why did the writer say Giselle Lopez “learned the hard way”?A. Because she had to pay the debt off slowly herself.B. Because she had to make donations to charity.C. Because she had difficulty finishing her job.D. Because she had too many credit cards.29. What is the best title for the passage?A. Saving Matters!B. Parents Rule!C. Classes Work!D. Money Counts!DCities are taking interest in electric scooter -share systems as an affordable transportation to cut down on pollution and traffic jams. The electric scooters, which weigh between 30 and 40 pounds, reach speeds of about 15 mph.In September 2017, Santa Monica, California, became the first U.S. city tohave an electric scooter-share service. Users find and unlock one of the more than1,000 scooters with a smartphone app. A ride costs $1, and then 0.15 cents for eachminute of riding throughout the beach town.Bird, the startup operating the scooter-share, picks up the scooters every night to charge (充电) them, and places them around Santa Monica each morning ready for people’s use. The company was created by Travis VanderZanden, who once worked in Uber and Lyft, after he realized ridesharing services failed to help with traffic jams and air pollution. Since its September 2017 beginning, Bird’s system has served more than 50,000 riders who have taken 250,000 trips--- more than half of which have been in the last month. It’s since expanded(扩张) to Venice, California ,and some neighborhoods in Los Angeles and San Diego. Bird plans to expand to lots of markets by the end of 2018.Competitors, backed by millionaires, are appearing. Two bike-share startups, LimeBike and Spin, have spoken of plans to provide electric scooters in cities this year.Electric scooters have also gotten the attention of Mayor Pete Buttigieg from South Bend, Indiana. The city is interested in using them as a way to improve public transportation. South Bend was one of the first to use bike-share systems, which allow people to park ridesharing bikes on public land. “We love to be early pioneers,” said Buttigieg. “If we work out the safety problem, we would be open to welcoming the technology.”“We need to make sure these new transportation systems are lawful and safe for users,”Constance Farrell, a spokeswoman for the city of Santa Monica told CNN. “We would like to see electric scooters continue to operate in the city. They are in line with our goal of multi-modal living and carbon-light living.” According to Farrell, there have been eight accidents, including one with a serious head injury, in Santa Monica after the scooters rolled out. Users are required to have a driver’s license (驾照), shouldn’t ride on sidewalks or have otherpassengers on board.Bird has given out free helmets to some riders and tells its users to ride in bike lanes, but some users ride on sidewalks, and most U.S. streets don’t havebike lanes. “The global community of cities is going to have to work this all out for scooters,” Buttigieg said. “They can move unbelievably quickly. That’s exciting, and a l ittle dangerous.30. Why did Travis create Bird company?A. Because he received support from millionaires and the government.B. Because many cities had electric scooter-share services.C. Because it is lawful and safe to use electric scooters.D. Because cities need better ridesharing services.31. The words “are in line with” in Paragra ph 6 probably mean “________”.A. stopB. meet the need ofC. changeD. are ahead of32. What can we learn from the passage?A. Future electric scooters will be very slow and safe.B. Electric scooters will cause fewer accidents than cars.C. More cities will try to help with electric scooters service.D. Future traffic problems will be solved with help of electric scooters.33. The passage is mainly about ________.A. the challenges of the electric scooter-share system in AmericaB. the advantages and disadvantages of electric scooters in AmericaC. the introduction of the electric scooter-share service in AmericaD. the future of electric scooters in public transportation in America四、阅读短文,根据短文内容回答问题。

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